DOOM: 17 Easter Eggs, Secrets & References You Must Find

8. Re-Envisioned Original Artwork - DOOM (1993)

Across 2015, Bethesda held a 'Vote Like Hell' poll, so fans could decide which reversible cover art they'd like to have on the back of the main game's case.

A reworked version of Don Ivan Punchatz' original won out, and you need only flip the box art around to reveal it. However, in the game you can still find a slick 'ancient scroll' that plays into the overall story of Doomguy's Praetor Armour being passed down for thousands of years.